A field experiment carried-out in sandy loam soil to study the effect of effective microorganisms and green manure on productivity of two forage crops
under dry conditions. The experiment was conducted at Agriculture Experimental Station of King Abdulaziz University (KAU) located at Hada
Alsham, north east of Jeddah, KSA. Four treatments were investigated under the current study. In control (T1) the two grown crops were growing
using recommended dose of nitrogen fertilizers added after planting. The second treatment (T2) was diluted solution (1:1000) of effective microorganisms
(EM1). The third treatment (T3) was green manure while the fourth treatment (T4) was EM1 and green manure together. The results indicated that
the best treatments were green manure with EM1 (T4) in alfalfa while it was only green manure (T3) in pearl millet. The single effect of EM1 was
positive but not significant compared with control. Water use efficiency increased by using green manure and effective microorganisms. Increasing
water use efficiency resulted in large amount of irrigation water saving. The saved water reached to 24% in pearl millet and 17% in alfalfa compared
to control.